Sand vrs. Potting soil

Sand - 190 - 100 = 90/100 = .90 * 100 = 90% change

Potting soil - 290 - 100 = 190/100 = 1.90 * 100 = 190% change

The sand is more likely to slide by adding water, by a whole 100% percent.

picture of mass movement was sick so it's late

Landslide it is when the lose rock or soil and rock fall down a steep slope.

When is mud dangerous?

1. What conditions might cause mud to flow?
The conditions would be that the hill or what ever the mud is sliding down is steep, it has been raining, an earthquake just happened, and maybe there was a volcanic eruption.
2. What conclusion can you draw from the two images?
The steeper the hill the faster the mud will flow or the steeper the hill the more likely there will be a mudflow.

3. List at least two ways you could make the mud slide off the 30° slide plane without changing the plane's angle?

You could make the mud more of a liquid or you could shake the board.

4. What conditions in nature would be represented by the answers you gave for question 3?

The liquid one would be a heavy rain and the shaking one would be an earthquake.

5. List at least two factors that contribute to the formation of mudflows on volcanoes.
When the volcano erupts it shoots out ash and melts snow and ice and the water and ash mix together to make a mudflow. Also the ash is still left on the ground and when it rains the rain causes the ash to make a mudflow.

6. How might forest fires affect an area's potential for experiencing mudflows?

Since the fires leave all this loose ash when it rains it should start a mudflow very easy.

7. Hypothesize about how mudflows could change the topography of an area after a fire.

I think that a mudflow in a area that just had a forest fire wouldn't really do to much because everything standing already got burned, but if it carried far enough to the trees standing, then it would do some damage.

8. What human activities strip soil of its protective vegetation and increase its vulnerability to mudflows?

Some activities that strip soil of its protective vegetation that humans do are farming, cutting down trees, and construction.

9. Write a paragraph describing the conditions that cause dangerous mudflows. Include the types of locations where mudslides are most likely to occur.

Mudflows usually happen because of three reasons and they're volcanoes, earthquakes, and heavy rain. Volcanoes cause mudflows because they build up so much ash that is on its steep slope, so then rain or melted snow can easily make the ash into a mudflow. Earthquakes cause mudflows because they shake the soil and if the soil isn't tightly pack or if it is on a steep slope then it will also cause a mudflow. Heavy rain causes mudflows because the rain mixes with the lose soil or ash that has built up and turns it into a mudflow. Those are the three main reasons for a mudflow.

earthquake part 1 and 2

1. About 20 happen in the last day.
2. About 35 have happened in the last day.
3. found it
4.  magnitude 6.0
5.  Southern East Pacific Rise 
6. divergent boundary

PART 2

1.  Kavarna, Bulgaria 
   
2.  magnitude 3.7
   
3. Close to a convergent boundary
   
4. It didn’t hurt anyone, but sent school students to the courtyard.
   

number 8

8.
a. The Mid-Atlantic Ridge is formed from divergent boundary between oceanic oceanic plates it's an mid-oceanic ridge.
b. Kuril Trench is formed by a convergent boundary between oceanic continental plates it's an oceanic trench.
c. Philippine Islands are a convergent boundary between oceanic oceanic plates it's an island arc.
d. East African Rift Valley is a divergent boundary between continental continental it's a rift valley.
e. Red Sea is formed by a divergent boundary between continental continental it was formed from a rift valley.
f. Peru-Chile Trench by a convergent boundary between oceanic continental it's an oceanic trench.
g. Aleutian Islands by a convergent boundary between oceanic oceanic it's an island arc.

Plate Boundaries with out number 8

1.divergent boundaries, convergent boundaries, transform boundaries

2.Divergent is when the plates are moving in opposite directions, this happens because magma is pushing up from the mantle and is creating new crust.

3.Mid-Atlantic Ridge, Iceland, Active volcano

4.Convergent is when the crust recycles when one plate goes under the other.
5.

oceanic-oceanic convergence

oceanic-continental convergence continental-continental convergence
6. a. Large ocean trenches form b. large ocean trenches form c. causes large mountains
7. It is when the plates go up or down to each other. earthquakes or trenches. San Andreas fault zone in California.

Geologic timeline questions

1. Multi-cellular life began because the surface of the earth had water on it and the atmosphere began to fill with oxygen. Plus the heavy bombardment ended so life wouldn't be killed by the explosions. With this environment life evolved from single-cellular to multi-cellular.
2. The Archaean Eon because Earth, the oceans, and the moon were formed. Also the heavy bombardment ended to, so the most important events happened during the first eon.
3. Humans are not significant at all compared to the entire history because the Earth is 4.5 billion years old and humans first were around like 20,000 to 40,000 years ago. So the Earth has been human free for around 4,499,980,000 years, so they haven't been around long enough to be significant.